Alrighty, I've had some thought about this and what I wanted to do is have a light, easy to handle and a smaller version this cab so I was thinking of resizing the complete cab to actually fit it in my attic without any problems. Now this comes with some complications namely:
1) Will a resize actually look nice?
2) A complete resize is impossible as I want to save the artwork but also the general shape of the sides that I already have.
So here are the current dimensions:

And this is what I have been thinking of as a resize. Each side has 2 values in which the left value represents 73% of the original size and the right value represents 85% of the original size. The red line is the arched part of the cab that will not be resized:

The width of the cab will also be resized according to the same ratio.
Looking at a nice size I would actually go for the 85% resize however that raises the CP by almost 9 cm's compared to sit down cabs and that might be too high to sit behind it and too low to stand. That would mean I need to take more off from the bottem but then I am afraid the ratio's will not look nice. Any thoughts on this other than leaving it in its original size?
The other question is the angle of the screen, what would be the ideal gaming angle?